Gael schlickeysest



(No Model.)

0. SOHLIGKEYSEN;

APPARATUS FOR MIXING MORTAR, CONCRETE, &c. No. 316,069.

Patented Apr. 21

Nr'ra STA-Tas- CARL SGHLIOKEYSEN, OF BERLIN, GERMANY.

SPECIFICATION forming part of Letters Patent No. 316,069, dated April21, 1885.

Application tiled June 28, 1884. (No model.) Patented in BelgiumFebruary 29, 1884, No. 61,327, and in England March 1, 1884,

another mixing-vessel and mixing it with other substances,especiall ygravel or quartz or pieces of stone, and adding water, then conveying Ithe material to one end of the vessel, where it is either allowed todrop out or is first raised to a higher level by gutter-elevator andthen discharged.

The accompanying drawings form a part of this specification andrepresent what I consider the best means of carrying out the invention.

Figure 1 is a transverse section on the line 00 a: in Fig. 2. Flg. 2 isa plan View, partly in section. Fig. 3 is a transverse section on theline 3 y in Fig. 2. Fig. 4 is an enlarged sectional detail view of oneof the mixer-arms in the second trough. Fig. 5 is a verticalcross-section through the said second trough. Fig. 6 is a part plan ofthe mixer arms therein. 7

Similar letters of reference indicate corresponding parts in all thefigures where they occur.

The firstmixing-trough, A,is partly or wholly open at the top. Thematerials-such as lime, sand, cement, or other materialsare thrown in atone end, A, Fig. 2, in a dry or wet state, and by means of themixer-arms A Fig. 3, on the revolving shaft A well mixed, and by theskewedor screw-thread position of blades on the arms simultaneouslyconveyed in the well-known manner to the other end, where it is let outby a slide-valve through an opening, A, orby another slide-valvethroughrevolving mixer-arms, such as B B Figs. 4,

concrete or other made material to the required height and dischargingit there. The gutterelevator is somewhat wider than the opening B in thesecond mixing-trough, from which it rises. There is a shield, B, Fig. 1,below the endless gutter,and fixed to the second mixingtrough, B, forpreventing the concrete from falling through instead'ot' being taken upby the cross-boards D in the gutter-elevator. As the aforesaid opening Bto the second mixingtrough, B, is open at the top and wider than thelargest stones in the concrete,no jamming of the concrete can takeplace, and the mixing, lifting, and discharging operations are not interrupted. An adjustable board, 0 near the top of the elevator is fordirecting the discharge of the concrete.

In mixing concrete it is of importance that the smaller particles bemixed as dry as possible, then to add water so as to form an even grout,and to mix the latter with gravel, pieces of stone, lime, or the like.These requirements are fulfilled by my apparatus.

In placeof the two mixing-vessels shown three or more can be arranged,of which one is always conveying the material automatically intoanother, and the material is being mixed there wlth other substances.This mixed product is fed to the next succeeding trough.

It is new to use for coarse concrete a mixing-trough with knives or armssimilar to.

those for mixing clay, and this is only possible by providing meanswhereby all jammingv walls. The knives or arms B are also, as shown inFigs. 4, 5, and 6, provided with steel edge-pieces B which haveprojecting points or wedges that come near the trough-walls. When wornthese pieces may be replaced by new ones, or be forced a little fartherout till they almost touch the walls; also, for thesame purpose atthose. places where the knives pass I provide the inner walls of thetrough with strips of sheet steel B Figs. 5 and 6, riveted on at onelower end, and reaching up to the hopper, where they are provided withhingepins B, to which is connected a knee-lever,

B and adjustingscrew B, for drawing the,

band up around the knife ends, which thus scrape against it. These steelbands areonly needed on the side where the knvies rise, as there is notendency tojam on the other side, and they are cut off slanting at B inorder that the knives may not jam the pieces of stone here, but slidepast the slanting edge.

Opposite the two outlet-openings B B the mixer-shaft F is provided withone or more flaps, or a double flap, G G, (see Figs. 1 and 2,) for thepurpose of insuring that the mixture is led more certainly toward thoseopenings. These flaps G are weakly secured, so that they wouldeventually give way and turn on the shaft in case a heavyobstruction-such as stone-should be j ammed between a flap and the wallof the trough. When the obstruction had been removed, it would againturn around with the shaft and fulfill its purpose.

I claim as my invention- 1. In a machine for mixing concrete, two ormore mixing-troughs, each having revolving shafts and arms, arrangedside by side, and the exit end of the primary trough connected with theentrance end of the secondary trough by separate gateways controlled byadjustable gates or valves combined with a single power and connections,whereby two or more ingredients are mixed in the primary trough andautomatically carried to the next trough, mixed with other ingredients,and automatically carried in the opposite direction from the secondtrough, as set forth.

2. The construction of the mixing-troughs, and especially constructingthe second trough with mixer-arms provided with spur-like projections,with upper slot-openings, with about radial upper hopper-walls, and withyielding parts, for the purpose of preventing jamming, substantially asset forth.

3. In a mixing-trough, in combination with a revolving shaft carryingknives, the series of correspondingly broad plates or 'aprons of sheetmetal, each fixed at one end to the wall, and provided with'means fortightening at the opposite end, arranged, as shown, so that the edges ofthe knives touch the yielding apron, and thus prevent jamming, as hereinspecified.

4. In a mixing-trough, the yielding aprons B, having a beveled orinclined receiving end, in combination with provisions for adjusting andtightening the other end, and with a revolving shaft having blades orknives revolving in contact with or near such apron, substantially asherein specified.

5. In combination with the knife-shaft of a horizontal clay-mixer, oneor more ejectingwings mounted opposite the discharge-openings in suchmanner that the mixed material as it arrives is discharged or pressedout, but so that they remain stationary in case of jamming of stonesbetween the wings and wall to avoid breakage while the shaft continuesto turn, all substantially as herein specified.

In testimony whereof I have hereunto set my hand, at Berlin, in thepresence of two subscribing witnesses.

. CARL SGHLICKEYSEN.

\Vitnesses:

' O. GRONERT, W. HANOKE.

